Home / 319,105.32-440,440.39-198,337.82

Finding the Fourth Proportional to 319,105.32, 440,440.39 and 198,337.82

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Solution

The fourth proportional to 319,105.32, 440,440.39 and 198,337.82 is: 273,752.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,105.32 : 440,440.39 = 198,337.82 : x
  2. Step 2: Convert to fraction form
    319,105.32/440,440.39 = 198,337.82/x
  3. Step 3: Cross multiply
    319,105.32x = 440,440.39 × 198,337.82
  4. Step 4: Simplify right side
    319,105.32x = 87,355,983,722.62
  5. Step 5: Solve for x
    x = 87,355,983,722.62/319,105.32
  6. Step 6: Final answer
    x = 273,752.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.